Buckling of compressed tee due to global bending.These additional checks are mainly local and relate to the tee section (part of the web above and below the opening) and the web post (part of the web between two openings). Next to the usual checks from EN (implemented in Diamonds), the additional checks mentioned below also apply (not implemented in Diamonds).
If not, also adjust the cross section classification.
For the global analysis (determing M,N,V in a construction) I-shaped cross sections with reduced properties (calculated near the openings) can be used:
